P17. "Intergenerational Earnings Mobility Revisited: Estimates Based on Lifetime Earnings." Scandinavian Journal of Economics, 114(1), pp 1-23, 2012. With Øivind Anti Nilsen, Kjell Vaage, and Karl Åge Jacobsen. (UHR Level 2 - Economics).
P16. "Do collective actions clear common air? The effect of international environmental protocols on sulphur emissions." European Journal of Political Economy, 27, pp 343-351, 2011. With Sigve Tjøtta. (UHR Level 1 - Economics).
P15. "Overworked? The relationship between workload and health worker performance in rural Tanzania." Journal of Health Economics, 29, pp 686-698, 2010. With Ottar Mæstad and Gaute Torsvik. (UHR Level 2 - Health Science).
P14. "Measuring heterogeneity in the returns to education using an education reform." European Economic Review, 54, pp 483-500, 2010. With Kjell Gunnar Salvanes and Kjell Vaage. (UHR Level 2 - Economics).
P13. "Does variation in general practitioner (GP) practice matter for the length of sick leave? A multilevel analysis based on Norwegian GP--patient data." Social Science and Medicine, 70, pp 1590-1598, 2010. With Tor Helge Holmås and M. Kamrul Islam. (UHR Level 2 - Health Science).
P12. "Variation in practice: A questionnaire survey of how congruence in attitudes between doctors and patients influence referral decisions." Medical Decision Making, 28, pp. 262-268, 2008. With Benedicte Carlsen and Ole Frithjof Norheim. (UHR Level 1 - Health Science).
P11. "Access to Primary Health Care and Health Outcomes: The Relationships between GP Characteristics and Mortality Rates." Journal of Health Economics, 25, 1139-1153, 2006. With Tor Helge Holmås. (UHR Level 2 - Health Science).
P10. "Patient involvement in clinical decision-making: The effect of GP attitude on patient satisfaction." Health Expectations, 9, pp. 148-157, 2006. With Benedicte Carlsen. (UHR Level 1 - Health Science).
P9. "Transitions to employment from labour market enterprises in Norway." International Journal of Social Welfare, 15: 121-130, 2006. With Svenn-Åge Dahl. (UHR Level 2 - Health and Social Science).
P8. "Late careers and career exits in Norway." In H.-P. Blossfeld, S. Buchholz and D. Hofäcker (eds): Globalization, Uncertainty and Late Careers in Society. London: Routledge, 235-254, 2006. With Kjell Vaage and Svenn-Åge Dahl.
P7. "Educational Attainment and Family Background." German Economic Review, 6(3), pp. 377-394, 2005. With Kjell G. Salvanes and Kjell Vaage. (UHR Level 1 - Economics).
P6. "Estimating treatment effects for discrete outcomes when responses to treatment vary: an application to Norwegian vocational rehabilitation programs." Journal of Econometrics, 125(1-2), pp. 15-51, 2005. With JJ Heckman and EJ Vytlacil. (UHR Level 2 - Economics).
P5. "Estimating the employment effects of education for disabled workers in Norway." Empirical Economics 28(3), pp. 515-533, 2003. (UHR Level 1 - Economics). Reprinted in (ed.) Badi Baltagi, Panel Data, Theory and Applications, Physica-Verlag, A Springer-Verlag Company, 2004.
P4. "A low-key social insurance reform - effects of multidisciplinary outpatient treatment for back pain patients in Norway." Journal of Health Economics, 22(5), pp. 747-762, 2003. With TH Holmås and E Kjerstad. (UHR Level 2 - Health Science).
P3. "Skill formation among vocational rehabilitation clients - public policy versus private incentives." Education Economics, 11(3), pp. 219-237, 2003. With Egil Kjerstad. (UHR Level 1 - Education).
P2. "Bounding a matching estimator: the case of a Norwegian training program." Oxford Bulletin of Economics and Statistics, 63(1), pp. 115-143, 2001. (UHR Level 2 - Economics). Becker and Caliendo (2007) has written a Stata program for this estimator.
P1. "Three training parameters within a semiparametric factor model." Bulletin of the International Statistical Institute, 52 (Conference Journal), pp. 461-464, 1999. With JJ Heckman and EJ Vytlacil.